E14
Weishaupt
Control Board Communication / Internal Error
Unit shows E14; control panel may be unresponsive or display flickers.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty main control board, Loose low-voltage connectors, Power supply instability, Internal memory error
How to Fix / Troubleshooting
Safety: Isolate power before removing the front panel or touching the electronics.
- Power cycle: Turn off the power to the Weishaupt water heater at the breaker for at least 30 seconds, then restore power and observe if E14 clears.
- Check supply voltage: Ensure the mains voltage is within the specified range and that there are no frequent power dips. Use a surge protector if necessary.
- Inspect connectors: Remove the front cover and gently press all low-voltage connectors onto the control board to ensure good contact.
- Moisture check: Look for signs of condensation or water ingress on the control board. If present, the source of moisture must be corrected and the board may need replacement.
- Board replacement: Persistent E14 usually indicates a defective control board that must be replaced and configured by a Weishaupt service technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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